Fluid catalytic cracking (FCC)
The aim of this process is to convert low value products from other processes into higher value products.
Fluid catalytic cracking generally receives the feedstock from the vacuum distillation column (heavy fractions) and produces light ends (sold as LPG or conveyed to the alkylation units), naphtha and light oils (conveyed to the hydrotreating unit), medium oils (conveyed to the hydrocracking unit) and slurry oils that are sold as heavy fuel oils.
Catalytic cracking reaction
The catalytic cracking reaction takes place in a fluid bed reactor followed by a regenerator (also a fluid bed) for the spent catalyst.
A series of cyclones are positioned at the top of the reactor and regenerator; these are used to separate the catalyst powders from the outgoing gas current.
The cyclones have an anti-abrasive lining while the reactor and regenerator walls are lined with refractory material. Both linings are normally reinforced using a hexagonal mesh and anchors.
Distinctive characteristics of the Costacurta hexagonal meshes for catalytic cracking reaction are:
- High automation and flexibility of the production process
- High quality levels, due to both the production process and the quality of the material used